Updated on 2026-08-25 GMT+08:00

Obtaining Information About a Single Instance Node

Function

This API is used to obtain information about a single instance node.

Authorization Information

Each account has permissions to call all APIs, but IAM users must have the required permissions specifically assigned.

If you are using role/policy-based authorization, see the required permissions in Permissions Policies and Supported Actions.
If you are using identity policy-based authorization, the following identity policy-based permissions are required.

Action

Access Level

Resource Type (*: required)

Condition Key

Alias

Dependencies

das::showCloudDBAInfo

Read

-

-

-

-

Action	Access Level	Resource Type (*: required)	Condition Key	Alias	Dependencies
das::showCloudDBAInfo	Read	-	-	-	-

URI

GET /v3/{project_id}/instance/nodes-info

**Table 1** URI parameters
Parameter	Mandatory	Type	Description
project_id	Yes	String	Definition Project ID of a tenant in a region. To obtain this value, see Obtaining a Project ID. Constraints N/A Range The value can contain 32 characters. Only letters and digits are supported. Default Value N/A

**Table 2** Query parameters
Parameter	Mandatory	Type	Description
instance_id	Yes	String	Definition Instance ID, which uniquely identifies an instance. You can obtain the instance ID from the instance list or instance details. Constraints N/A Range The value can contain 36 characters. Only letters and digits are allowed. Default Value N/A
datastore_type	Yes	String	Definition Database type Constraints N/A Range MySQL TaurusDB PostgreSQL Microsoft SQL Server Default Value N/A

Request Parameters

None

Response Parameters

Status code: 200

**Table 3** Response body parameters
Parameter	Type	Description
instance_id	String	Definition Instance ID, which uniquely identifies an instance. You can obtain the instance ID from the instance list or instance details. Range The value can contain 36 characters. Only letters and digits are allowed.
instance_name	String	Definition Instance name Range N/A
instance_nodes	Array of Table 4 objects	Definition Instance node list

**Table 4** instance_nodes
Parameter	Type	Description
id	String	Definition Node ID Range The value can contain 36 characters. Only letters and digits are allowed.
name	String	Definition Node name Range N/A
role	String	Definition Node role Range N/A
status	String	Definition Node status Range normal abnormal
type	String	Definition Node type Range N/A

Example Requests

GET https://das.cn-north-1.myhuaweicloud.com/v3/054e292c9880d4992f02c0196d3ea468/instance/nodes-info?instance_id=5c59fa7d6f09456b947f32922f9aeda1in01&datastore_type=MySQL

Example Responses

Status code: 200

Success

{
  "instance_id": "5c59fa7d6f09456b947f32922f9aeda1in01",
  "instance_name": "DAS-MYSQL-AT",
  "instance_nodes": [
    {
      "id": "09ab88b8a12340569ac056af284011d9no01",
      "name": "DAS-MYSQL-AT_node0",
      "role": "master",
      "status": "normal",
      "type": "master"
    }
  ]
}

Status Codes

Status Code	Description
200	Success
400	Bad request
500	Internal server error

Error Codes

See Error Codes.

Parent topic: Intelligent O&M